how would i add top menu into studio theme

Hi,
I have two issues here, firstly i would i make pages like (Home, About, Services, Contact etc) to appear or display on top menu of the studio theme and secondly this message display on the admin panel and i do not understand it here is it...
Your active theme:
Has the call to <?php wp_head(); ?> but it is not called directly before </head>
Has the call to <?php wp_footer(); ?> but it is not called directly before </body>

thanks